| // Copyright (c) 2013, the Dart project authors. Please see the AUTHORS file |
| // for details. All rights reserved. Use of this source code is governed by a |
| // BSD-style license that can be found in the LICENSE file. |
| |
| part of dart2js_incremental; |
| |
| /// Do not call this method directly. It will be made private. |
| // TODO(ahe): Make this method private. |
| Future<Compiler> reuseCompiler( |
| {CompilerDiagnostics diagnosticHandler, |
| CompilerInput inputProvider, |
| CompilerOutput outputProvider, |
| List<String> options: const [], |
| Compiler cachedCompiler, |
| Uri libraryRoot, |
| Uri packageRoot, |
| bool packagesAreImmutable: false, |
| Map<String, dynamic> environment, |
| Future<bool> reuseLibrary(LibraryElement library)}) { |
| UserTag oldTag = new UserTag('_reuseCompiler').makeCurrent(); |
| if (libraryRoot == null) { |
| throw 'Missing libraryRoot'; |
| } |
| if (inputProvider == null) { |
| throw 'Missing inputProvider'; |
| } |
| if (diagnosticHandler == null) { |
| throw 'Missing diagnosticHandler'; |
| } |
| if (outputProvider == null) { |
| outputProvider = const NullCompilerOutput(); |
| } |
| if (environment == null) { |
| environment = {}; |
| } |
| Compiler compiler = cachedCompiler; |
| if (compiler == null || |
| compiler.libraryRoot != libraryRoot || |
| !compiler.hasIncrementalSupport || |
| compiler.hasCrashed || |
| compiler.enqueuer.resolution.hasEnqueuedReflectiveElements || |
| compiler.deferredLoadTask.isProgramSplit) { |
| if (compiler != null && compiler.hasIncrementalSupport) { |
| print('***FLUSH***'); |
| if (compiler.hasCrashed) { |
| print('Unable to reuse compiler due to crash.'); |
| } else if (compiler.enqueuer.resolution.hasEnqueuedReflectiveElements) { |
| print('Unable to reuse compiler due to dart:mirrors.'); |
| } else if (compiler.deferredLoadTask.isProgramSplit) { |
| print('Unable to reuse compiler due to deferred loading.'); |
| } else { |
| print('Unable to reuse compiler.'); |
| } |
| } |
| oldTag.makeCurrent(); |
| compiler = new Compiler( |
| inputProvider, |
| outputProvider, |
| diagnosticHandler, |
| libraryRoot, |
| packageRoot, |
| options, |
| environment, |
| null, |
| null); |
| JavaScriptBackend backend = compiler.backend; |
| |
| full.Emitter emitter = backend.emitter.emitter; |
| |
| // Much like a scout, an incremental compiler is always prepared. For |
| // mixins, classes, and lazy statics, at least. |
| emitter |
| ..needsClassSupport = true |
| ..needsMixinSupport = true |
| ..needsLazyInitializer = true |
| ..needsStructuredMemberInfo = true; |
| |
| Uri core = Uri.parse("dart:core"); |
| return compiler.libraryLoader.loadLibrary(core).then((_) { |
| // Likewise, always be prepared for runtimeType support. |
| // TODO(johnniwinther): Add global switch to force RTI. |
| compiler.enabledRuntimeType = true; |
| backend.registerRuntimeType( |
| compiler.enqueuer.resolution, compiler.globalDependencies); |
| return compiler; |
| }); |
| } else { |
| for (final task in compiler.tasks) { |
| if (task.watch != null) { |
| task.watch.reset(); |
| } |
| } |
| compiler |
| ..userOutputProvider = outputProvider |
| ..provider = inputProvider |
| ..handler = diagnosticHandler |
| ..enqueuer.resolution.queueIsClosed = false |
| ..enqueuer.resolution.hasEnqueuedReflectiveElements = false |
| ..enqueuer.resolution.hasEnqueuedReflectiveStaticFields = false |
| ..enqueuer.codegen.queueIsClosed = false |
| ..enqueuer.codegen.hasEnqueuedReflectiveElements = false |
| ..enqueuer.codegen.hasEnqueuedReflectiveStaticFields = false |
| ..compilationFailed = false; |
| JavaScriptBackend backend = compiler.backend; |
| full.Emitter emitter = backend.emitter.emitter; |
| |
| // TODO(ahe): Seems this cache only serves to tell |
| // [emitter.invalidateCaches] if it was invoked on a full compile (in |
| // which case nothing should be invalidated), or if it is an incremental |
| // compilation (in which case, holders/owners of newly compiled methods |
| // must be invalidated). |
| emitter.cachedElements.add(null); |
| |
| compiler.enqueuer.codegen |
| ..newlyEnqueuedElements.clear() |
| ..newlySeenSelectors.clear(); |
| |
| emitter.nsmEmitter |
| ..trivialNsmHandlers.clear(); |
| |
| backend.emitter.typeTestRegistry |
| ..checkedClasses = null |
| ..checkedFunctionTypes = null |
| ..rtiNeededClasses.clear() |
| ..cachedClassesUsingTypeVariableTests = null; |
| |
| emitter.interceptorEmitter |
| ..interceptorInvocationNames.clear(); |
| |
| backend.emitter.nativeEmitter |
| ..hasNativeClasses = false |
| ..nativeMethods.clear(); |
| |
| backend.emitter.readTypeVariables.clear(); |
| |
| emitter |
| ..outputBuffers.clear() |
| ..classesCollector = null |
| ..mangledFieldNames.clear() |
| ..mangledGlobalFieldNames.clear() |
| ..recordedMangledNames.clear() |
| ..clearCspPrecompiledNodes() |
| ..elementDescriptors.clear(); |
| |
| backend |
| ..preMirrorsMethodCount = 0; |
| |
| if (reuseLibrary == null) { |
| reuseLibrary = (LibraryElement library) { |
| return new Future.value( |
| library.isPlatformLibrary || |
| (packagesAreImmutable && library.isPackageLibrary)); |
| }; |
| } |
| return compiler.libraryLoader.resetAsync(reuseLibrary).then((_) { |
| oldTag.makeCurrent(); |
| return compiler; |
| }); |
| } |
| } |
| |
| /// Helper class to collect sources. |
| class StringEventSink implements EventSink<String> { |
| List<String> data = <String>[]; |
| |
| final Function onClose; |
| |
| StringEventSink(this.onClose); |
| |
| void add(String event) { |
| if (data == null) throw 'StringEventSink is closed.'; |
| data.add(event); |
| } |
| |
| void addError(errorEvent, [StackTrace stackTrace]) { |
| throw 'addError($errorEvent, $stackTrace)'; |
| } |
| |
| void close() { |
| if (data != null) { |
| onClose(data.join()); |
| data = null; |
| } |
| } |
| } |
| |
| /// Output provider which collect output in [output]. |
| class OutputProvider implements CompilerOutput { |
| final Map<String, String> output = new Map<String, String>(); |
| |
| EventSink<String> createEventSink(String name, String extension) { |
| return new StringEventSink((String data) { |
| output['$name.$extension'] = data; |
| }); |
| } |
| |
| String operator[] (String key) => output[key]; |
| } |